Burning Smell from Engine??
#11
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Join Date: Aug 2017
Location: Colorado
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For me, the burnt smell wasn't evident when my A5 Sportback was purchased last August. In fact, it only started after the first service, performed last May at 9,850 miles. It also seems to be running a bit hotter than before the service. Sloppy work? Thoughts?
#12
AudiWorld Super User
Summer? Give the first service is an oil change I’m at a loss at to how this would in any way have any bearing on operating temperature. If you’re smelling burning oil, it could be sloppy work if the tech spilled oil on the exhaust/turbo and didn’t clean it up.
#13
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Smell-wize (just because I’ve never typed that word before), sure, probably spillage. After a road trip to California last May I noticed small black drippy specks, about the size of coarse pepper, radiating away from the oil fill cap. They’ve not returned after wiping affected areas down with a rag.
Lastly, I just checked the oil level (cold engine): a little more than 2/3rds.
#14
Burning Smell and fans running after parking
I got this from another forum from a guy called Mikael
To reduce the amount of soot (particles, black smoke) emitted by a diesel engine, a Diesel Particulate Filter is mounted in the exhaust system. This effectively collects most soot particles produced by the engine just like a trap.
But when the filter is full, it has to be emptied. This is automatically done periodically, and the way it works is that the engine adds some extra fuel so that the particles trapped in the DPF may be burnt out.
If this so-called regeneration cycle starts just as the engine is shut-off, you may notice the burnt smell and the fans are running to prevent the engine bay from overheating during the procedure.
I also phoned my dealer who confirmed this. Apparently the regenerator can run up to 600 deg c to do it's job.
Apparently normal
To reduce the amount of soot (particles, black smoke) emitted by a diesel engine, a Diesel Particulate Filter is mounted in the exhaust system. This effectively collects most soot particles produced by the engine just like a trap.
But when the filter is full, it has to be emptied. This is automatically done periodically, and the way it works is that the engine adds some extra fuel so that the particles trapped in the DPF may be burnt out.
If this so-called regeneration cycle starts just as the engine is shut-off, you may notice the burnt smell and the fans are running to prevent the engine bay from overheating during the procedure.
I also phoned my dealer who confirmed this. Apparently the regenerator can run up to 600 deg c to do it's job.
Apparently normal
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